Question:
The functional group that can be identified through Tollens' reagent test is:
The functional group that can be identified through Tollens' reagent test is:
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Tollens' reagent gives silver mirror test with aldehydes.
Updated On: May 4, 2026
- Aldehyde
- Alcoholic
- Phenolic
- Carboxylic acid
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The Correct Option is A
Solution and Explanation
Step 1: Understand Tollens' reagent.
Tollens' reagent is ammoniacal silver nitrate. It contains: \[ [Ag(NH_3)_2]^+ \]
Step 2: Identify what Tollens' reagent detects.
Tollens' reagent is used to detect aldehydes. Aldehydes are easily oxidized to carboxylate ions. During this process, silver ion is reduced to metallic silver.
Step 3: Write the observation.
When an aldehyde reacts with Tollens' reagent, a silver mirror is formed. This is known as the silver mirror test. \[ \ce{RCHO -> RCOO^-} \] \[ \ce{Ag+ -> Ag} \]
Step 4: Final answer.
Therefore, Tollens' reagent identifies: \[ \text{Aldehyde group}. \]
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